Control unit



FIG. 1 is a front perspective view of an ornamental design for a controlunit;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures depict portions of the control unit thatform no part of the claimed design.

CLAIM The ornamental design for a control unit, as shown and described.